I recently purchased a used Audi A5 and have noticed that it has a rough idle at startup. I have heard some people say it could be due to a faulty PCV valve, while others say it could be an issue with the spark plugs. What could be causing this and how can I fix it?
ReplyIt sounds like you may be experiencing an issue with your PCV valve. This valve is responsible for regulating the amount of air that enters the engine and can cause a rough idle if it is clogged or malfunctioning. I recommend taking your Audi to a mechanic to have them inspect and potentially replace the valve if necessary.
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